146626642 has 4 divisors (see below), whose sum is σ = 219939966. Its totient is φ = 73313320.

The previous prime is 146626637. The next prime is 146626651. The reversal of 146626642 is 246626641.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 144985681 + 1640961 = 12041^2 + 1281^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36656659 + ... + 36656662.

Almost surely, 2^146626642 is an apocalyptic number.

146626642 is a deficient number, since it is larger than the sum of its proper divisors (73313324).

146626642 is an equidigital number, since it uses as much as digits as its factorization.

146626642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73313323.

The product of its digits is 82944, while the sum is 37.

The square root of 146626642 is about 12108.9488395979. The cubic root of 146626642 is about 527.3160167877.

Subtracting 146626642 from its reverse (246626641), we obtain a palindrome (99999999).

The spelling of 146626642 in words is "one hundred forty-six million, six hundred twenty-six thousand, six hundred forty-two".